Abstract: The blue phosphor of the present invention is represented by the general formula aBaO.bSrO.(1?a?b)EuO.cMgO.dAlO3/2.eWO3, where 0.70?a?0.95, 0?b?0.15, 0.95?c?1.15, 9.00?d?11.00, 0.001?e?0.200, and a+b?0.97 are satisfied. In the blue phosphor of the present invention, two peaks whose tops are located in a range of diffraction angle 2?=13.0 to 13.6 degrees and one peak whose top is located in a range of diffraction angle 2?=14.6 to 14.8 degrees are present in an X-ray diffraction pattern obtained by measurement on the blue phosphor using an X-ray with a wavelength of 0.774 ?.

Abstract: The blue phosphor of the present invention includes ZrO2 and a metal aluminate that is represented by the general formula aBaO.bSrO.(1?a?b)EuO.cMgO.dAlO3/2.eWO3, where 0.70?a?0.95, 0?b?0.15, 0.95?c?1.15, 9.00?d?11.00, 0.001?e?0.200, and a+b?0.97 are satisfied. This blue phosphor has a ZrO2 content of 0.01 to 1.00% by weight. In the blue phosphor of the present invention, two peaks whose tops are located in a range of diffraction angle 2?=13.0 to 13.6 degrees are present in an X-ray diffraction pattern obtained by measurement on the blue phosphor using an X-ray with a wavelength of 0.774 ?.

Abstract: There is provided a PDP including a front substrate and a rear substrate. The front substrate and the rear substrate are disposed via discharge spaces. The discharge spaces are filled with a discharge gas. In the discharge spaces or in a space permeable to the discharge spaces, a copper-ion-exchanged zeolite adsorbent is disposed which is in an activated state.

Abstract: There is provided a PDP in which the structure of the periphery of a protective film is improved, excellent secondary electron emission property is exhibited, and improved efficiency and increased life can be expected. There is further provided a PDP in which occurrence of a discharge delay at the time of driving is prevented, and exhibition of high quality image display performance can be expected even in a high definition PDP that is driven at a high speed. Specifically, a crystalline film containing Sr in CeO2 in a concentration of 11.8 mol % to 49.4 mol % inclusive is formed on the surface of dielectric layer on the discharge space side as surface layer (protective film) having a thickness of about 1 ?m. High ? fine particles having secondary electron emission property higher than those of protective film are arranged thereon.

Abstract: The present invention aims to provide a manufacturing method for a PDP which allows even high-definition and ultra-high-definition PDPs to demonstrate an excellent image display capability at improved luminous efficiency, by suppressing variation of a discharge gas composition, and by eliminating an impurity gas in a discharge space effectively. To achieve the aim, deterioration of an absorbent material 39 composed of copper ion-exchanged ZSM-5-type zeolite is prevented, by performing both sealing and evacuation steps for the front substrate 2 and back substrate 9 in a non-oxidizing gas atmosphere. This maintains properties of the absorbent material 39 for absorbing the impurity gas without degradation, even if the absorbent material 39 absorbs a Xe gas in a discharge gas introducing step.

Abstract: The present invention provides a phosphor with high luminance and color purity. The phosphor of the present invention is represented by the general formula: aYO3/2·(3?a)CeO3/2·bAlO3/2·cGaO3/2, where 2.80?a?2.99, 1.00?b?5.00, 0?c?4.00, and 4.00?b+c?5.00 are satisfied. In the phosphor, a peak whose peak top is located in the range of diffraction angle 2? of not less than 16.7 degrees but not more than 16.9 degrees is present in an X-ray diffraction pattern obtained by measurement on the phosphor using an X-ray with a wavelength of 0.774 ?.

Abstract: A plasma display panel (200) of the present invention includes a first panel (1) and a second panel (8). A discharge space (14) is formed between the first panel (1) and the second panel (8). In the plasma display panel (200), an electron emitting material (20) is disposed to face the discharge space (14). The electron emitting material (20) contains Sn, an alkali metal, O (oxygen), and at least one element selected from the group consisting of Ca, Sr, and Ba.

Abstract: A material suitable for improving the secondary electron emission coefficient of PDPs is provided to thereby enable a PDP to operate at a higher efficiency. Provided is a PDP (200) which includes a protective layer (7) formed by MgO and electron-emitting particles constituted of a crystalline compound dispersed on the protective layer (7) to form an electron emission layer (20). The electron-emitting particles are a crystalline compound whose primary components are indium, oxygen, and one or more selected from the group consisting of calcium, strontium, barium, and rare earth metals.

Abstract: The present invention aims to provide a plasma display panel that can be driven at low voltage and can offer favorable image display performance. In order to achieve the aim, on a surface of the front panel 1 on which the display electrode 5 is formed, the protective layer 7 made by using a crystalline oxide material that contains a crystalline oxide selected from the group consisting of (i) at least one of SrCeO3 and BaCeO3 and (ii) a solid solution of SrCeO3 and BaCeO3 is disposed so as to face the discharge space 14. By using the crystalline oxide material that contains the crystalline oxide selected from the group consisting of (i) at least one of SrCeO3 and BaCeO3 and (ii) a solid solution of SrCeO3 and BaCeO3, chemical stability can be improved without reducing secondary electron emission efficiency. A PDP capable of lowering drive voltage compared with a case where MgO is used can be obtained by using the crystalline oxide material.

Abstract: The present invention provides a phosphor with less luminance degradation that includes an oxide that is excellent in chemical stability and allows the electrostatic charge of the phosphor surface to shift toward positive direction. The present invention is a phosphor including a phosphor body and a composite oxide on at least a part of the surface of the phosphor body. The composite oxide contains M, Sn, and O, and M is at least one element selected from the group consisting of Ca, Sr, and Ba.

Abstract: The present invention provides a phosphor with high luminance and color purity. The phosphor of the present invention is represented by the general formula: aYO3/2·(3?a)CeO3/2·bAlO3/2·cGaO3/2, where 2.80?a?2.99, 1.00?b?5.00, 0?c?4.00, and 4.00?b+c?5.00 are satisfied. In the phosphor, a peak whose peak top is located in the range of diffraction angle 2? of not less than 16.7 degrees but not more than 16.9 degrees is present in an X-ray diffraction pattern obtained by measurement on the phosphor using an X-ray with a wavelength of 0.774 ?.

Abstract: The present invention aims to provide a manufacturing method for a PDP which allows even high-definition and ultra-high-definition PDPs to demonstrate an excellent image display capability at improved luminous efficiency, by suppressing variation of a discharge gas composition, and by eliminating an impurity gas in a discharge space effectively. To achieve the aim, deterioration of an absorbent material 39 composed of copper ion-exchanged ZSM-5-type zeolite is prevented, by performing both sealing and evacuation steps for the front substrate 2 and back substrate 9 in a non-oxidizing gas atmosphere. This maintains properties of the absorbent material 39 for absorbing the impurity gas without degradation, even if the absorbent material 39 absorbs a Xe gas in a discharge gas introducing step.

Abstract: The present invention aims to improve efficiency of a PDP by providing a material suitable for improving a secondary electron emission coefficient of the PDP. In order to achieve the aim, in a PDP 200, an electron emission layer 20 is formed by dispersing electron emissive particles including a crystalline compound on a protective layer 7 made of MgO. The crystalline compound is, for example, CaSnO3, SrSnO3, BaSnO3, or a solid solution of two or more of them (e.g. (Ca, Sr)SnO3 and (Sr, Ba)SnO3).

Abstract: A plasma display panel (200) of the present invention includes a first panel (1) and a second panel (8). A discharge space (14) is formed between the first panel (1) and the second panel (8). In the plasma display panel (200), an electron emitting material (20) is disposed to face the discharge space (14). The electron emitting material (20) contains Sn, an alkali metal, O (oxygen), and at least one element selected from the group consisting of Ca, Sr, and Ba.

Abstract: The blue phosphor of the present invention is represented by the general formula aBaO.bSrO.(1?a?b)EuO.cMgO.dAlO3/2.eWO3, where 0.70?a?0.95, 0?b?0.15, 0.95?c?1.15, 9.00?d?11.00, 0.001?e?0.200, and a+b?0.97 are satisfied. In the blue phosphor of the present invention, two peaks whose tops are located in a range of diffraction angle 2?=13.0 to 13.6 degrees and one peak whose top is located in a range of diffraction angle 2?=14.6 to 14.8 degrees are present in an X-ray diffraction pattern obtained by measurement on the blue phosphor using an X-ray with a wavelength of 0.774 ?.

Abstract: The blue phosphor of the present invention includes ZrO2 and a metal aluminate that is represented by the general formula aBaO.bSrO.(1?a?b)EuO.cMgO.dAlO3/2.eWO3, where 0.70?a?0.95, 0?b?0.15, 0.95?c?1.15, 9.00?d?11.00, 0.001?e?0.200, and a+b?0.97 are satisfied. This blue phosphor has a ZrO2 content of 0.01 to 1.00% by weight. In the blue phosphor of the present invention, two peaks whose tops are located in a range of diffraction angle 2?=13.0 to 13.6 degrees are present in an X-ray diffraction pattern obtained by measurement on the blue phosphor using an X-ray with a wavelength of 0.774 ?.